Connecticut Residential Sublease Agreement (2026)

Sublet your apartment or a room to a subtenant: master-lease incorporation, landlord consent with your state's rule, rent, deposit and disclosures that follow state law, plus a one-page consent form for the landlord.

Updated September 2026≈ 9 minReviewed against Conn. Gen. Stat. § 47a-21 · Conn. Gen. Stat. § 47a-15a · Conn. Gen. Stat. § 47a-23

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What you'll get

Sample first page of the Residential Sublease Agreement. Your answers fill in the blanks; the clauses required in Connecticut are added automatically.

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What this document covers

Sublandlord, subtenant, landlord and the master lease
Whole unit or a room, with shared areas
Term that ends before the master lease
Rent, due day and late fee within the state cap
Security deposit cap and return deadline
Utilities included, split, fixed or direct
Landlord consent and the state consent rule
Master-lease incorporation and subtenant duties
Federal lead-paint and state disclosures
Default, termination and no further subletting
One-page Landlord Consent to Sublease form

Connecticut rules that this document follows

Consent to sublet	Varies — No statute — the lease controlsSource: No statute; Conn. Gen. Stat. § 47a-1 et seq. is silent on subletting — the master lease controls; at common law a tenant may sublet unless the lease restricts it
Security deposit limit	2 months' rent — 2 months' rent; 1 month if tenant is 62 or olderSource: Conn. Gen. Stat. § 47a-21(b)
Deposit return deadline	21 days after move-outSource: Conn. Gen. Stat. § 47a-21(d)(2) (21 days after termination or 15 days after receiving forwarding address, whichever is later)
Interest on deposit	Required (see conditions)Source: Conn. Gen. Stat. § 47a-21(i) (annual interest at Banking Commissioner's rate; escrow account required)
Late fees	Lesser of $5/day up to $50, or 5% of the delinquent rentSource: Conn. Gen. Stat. § 47a-15a
Notice to end month-to-month	Landlord 3 days / Tenant 3 daysSource: Conn. Gen. Stat. § 47a-23 (no statutory MTM notice; 3-day notice to quit for lapse of time)
Required disclosures	Lead-Based Paint Disclosure (pre-1978 housing); Bed Bug Disclosure; Fire Sprinkler Disclosure; Owner and Agent Identification; Common Interest Community NoticeSource: Connecticut General Statutes Title 47a (Landlord and Tenant)

Rules current as of 2026-09-14. Statutes change; verify before relying on them.

How to use this Residential Sublease Agreement in Connecticut

Start with your own lease: find the subletting clause and get the landlord's written consent on the attached form before anyone moves in. Name the master lease and its end date so the sublease can never outlast it, describe exactly what is sublet (whole unit or a room plus shared areas), and set rent and deposit within Connecticut's caps — the deposit rules bind you as the subtenant's landlord.

Answer the disclosure questions from your own lease packet (lead paint, flood, bed bugs and the like) and give the subtenant a copy of the master lease, every attachment and a deposit receipt. Remember that you stay liable to the landlord for everything the subtenant does.

Frequently asked questions

Can I sublet my apartment in Connecticut without my landlord's permission?

No statute — the lease controls (Conn. Gen. Stat. § 47a-1 et seq.). Whatever the statute says, read your lease first: almost every residential lease requires the landlord's written consent, and subletting in breach of the lease is grounds for eviction of both you and the subtenant. This agreement records the consent and attaches a one-page form for the landlord to sign.

Who holds the subtenant's security deposit and when must it be returned in Connecticut?

You do, as the subtenant's landlord. Connecticut's deposit cap and return deadline apply to you — return it with an itemized statement within 21 days after the subtenant moves out, regardless of whether your own landlord has returned your deposit.

How do I end a month-to-month sublease in Connecticut?

The subtenant gives you at least 3 days' written notice; you give the subtenant the notice Connecticut law requires of a landlord (3 days). The sublease also ends automatically when your master lease ends.

Other names

sublet agreement
sublet contract
sublease contract
apartment sublease
room sublease
sublet lease
sublessor sublessee agreement
tenant to tenant lease

Other states

FormsByState provides self-help document templates and general information, not legal advice. We are not a law firm. For advice about your situation consult a licensed attorney in your state.